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EL817(S)(TD)
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Product Detailed Parameters
- Description：OPTOISOLATOR 5KV 1CH TRANS 4-SMD
- Series：-
- Mfr：Everlight Electronics Co Ltd
- Package：Tape & Reel (TR)
- Number of Channels：1
- Voltage - Isolation：5000Vrms
- Current Transfer Ratio (Min)：50% @ 5mA
- Current Transfer Ratio (Max)：600% @ 5mA
- Turn On / Turn Off Time (Typ)：-
- Rise / Fall Time (Typ)：4µs, 3µs
- Input Type：DC
- Output Type：Transistor
- Voltage - Output (Max)：35V
- Current - Output / Channel：50mA
- Voltage - Forward (Vf) (Typ)：1.2V
- Current - DC Forward (If) (Max)：60 mA
- Vce Saturation (Max)：200mV
- Operating Temperature：-55°C ~ 110°C
- Mounting Type：Surface Mount
- Package / Case：4-SMD, Gull Wing
- Supplier Device Package：4-SMD
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Overview
The EL817(S)(TD) is a single-channel transistor output optocoupler manufactured by Everlight Electronics Co Ltd. It features an infrared emitting diode optically coupled to an NPN phototransistor detector in a surface-mount package. The device provides high isolation voltage of 5000 Vrms between input and output circuits. Key electrical parameters include a collector-emitter breakdown voltage of 35 V, maximum forward current of 60 mA, and operating temperature range from -55 °C to +110 °C. The component is RoHS compliant and available in a 4-SMD gull wing configuration.
Feature Summary
- High isolation voltage capability between input and output circuits
- Compact surface-mount package design for space-constrained applications
- Wide operating temperature range suitable for industrial environments
Applications
- Signal isolation in digital communication interfaces
- Switching power supply feedback loops
- Microcontroller input/output isolation
Procurement Notes
Verify the specific suffix codes against the manufacturer datasheet to confirm pinout orientation and packaging type. Ensure compliance with RoHS directives if required by your assembly process. Cross-reference the exact part number with official distributor catalogs to confirm availability status and lead times before finalizing procurement plans.
Selection Notes
Select this component when high isolation voltage is required in a compact surface-mount form factor. Consider the CTR specifications and switching speed requirements relative to the application circuit. Verify that the thermal management capabilities align with the expected operating environment and duty cycle constraints.
Part Context
This component belongs to the EL817 series of optocouplers, which are widely used for electrical isolation. The series typically includes various package options and CTR grades. The (S)(TD) designation indicates a specific surface-mount variant within this family, distinguished by its physical footprint and terminal configuration compared to through-hole DIP versions.
Replacement Considerations
Equivalent parts may include other 4-pin SMD transistor output optocouplers with similar isolation ratings. Verify pin compatibility and CTR ranges before substitution. Common alternatives often share the same functional characteristics but may differ in physical dimensions or certification approvals.
